libs/libx264: Update to 20190324 and rework Makefile

* Update (lib)x264 to 20190324
* Stop using GNU Autotools and use libx264's own
  configuration facility
* Drop hardcoded CFLAGS, x264 will handle those fine on its own
  This will override toolchain optimizaion and set -O3
  irregardless of setting.
* Rework LTO and ASM optmization selection to make it more
  compact and readable. This drops optimization for x86 32-bit
  which is being deprecated in favour of x86_64 in general and
  the very few systems still in use that doesn't support 64-bit
  are too slow to be usable anyway.
* Import patches to fix compilation on ARM and x86 (32-bit)
  from OpenEmbedded
* Minor style fixes to Makefile

Source: http://cgit.openembedded.org/openembedded-core/tree/meta/recipes-multimedia/x264/x264

Signed-off-by: Daniel Engberg <daniel.engberg.lists@pyret.net>

libs/libx264/Makefile

@@ -8,55 +8,49 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=x264
-PKG_VERSION:=snapshot-20181006-2245
+PKG_VERSION:=snapshot-20190324-2245
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
 PKG_SOURCE_URL:=https://download.videolan.org/x264/snapshots/
 PKG_MAINTAINER:=Adrian Panella <ianchi74@outlook.com>
-PKG_HASH:=eae60e969958c0759554d5e338dea9b91f1f1fe85d9523c152c2259d8546f469
+PKG_HASH:=68010057edaadffc7593933d13084e8d32e041c42b17c089513d88c917f2ad54
 
 PKG_LICENSE:=GPL-2.0
 PKG_LICENSE_FILES:=COPYING
 
-PKG_FIXUP:=autoreconf
 PKG_INSTALL:=1
 
 include $(INCLUDE_DIR)/package.mk
 
-TARGET_CFLAGS:=$(filter-out -O%,$(TARGET_CFLAGS)) -std=gnu99 -fPIC -O3 -ffast-math -I.
-MAKE_FLAGS+= LD="$(TARGET_CC) -o"
+TARGET_CFLAGS:=$(filter-out -O%,$(TARGET_CFLAGS))
+MAKE_FLAGS:=$(filter-out LD=%,$(MAKE_FLAGS)) LD="$(TARGET_CC) -o"
 
-# ARM ASM depends on ARM1156 or later, blacklist earlier or incompatible cores
-# AMD Geode LX and i486 do not have SSE
-CPU_ASM_BLACKLIST:=geode i486 arm920t arm926ej-s arm1136j-s arm1176jzf-s fa526 mpcore xscale \
-		   464fp mips32 24kc 34kc 74kc octeon mips64
+# Instead of blacklisting a boatload of platforms just enable
+# optimization where it makes sense (matters) ie ARMv7+ and x86_64
 
-ifneq ($(CONFIG_SOFT_FLOAT)$(findstring $(call qstrip,$(CONFIG_CPU_TYPE)),$(CPU_ASM_BLACKLIST)),)
-  CONFIGURE_VARS+= AS= 
-  MAKE_FLAGS+= AS= 
-  CONFIGURE_ARGS += --disable-asm
-else
+ifneq ($(findstring cortex-a,$(CPU_TYPE)),)
   CONFIGURE_ARGS += --enable-lto
-ifneq ($(CONFIG_TARGET_x86),)
-ifeq ($(CONFIG_NASM),y)
-  CONFIGURE_VARS+= AS=nasm
-  MAKE_FLAGS+= AS=nasm
-else
-  CONFIGURE_VARS+= AS= 
-  MAKE_FLAGS+= AS= 
-  CONFIGURE_ARGS += --disable-asm
-endif
-endif
+  else
+  ifneq ($(CONFIG_TARGET_x86_64),)
+    CONFIGURE_ARGS += --enable-lto
+    ifeq ($(CONFIG_NASM),y)
+      CONFIGURE_VARS+= AS=nasm
+      MAKE_FLAGS+= AS=nasm
+    endif
+    else
+    CONFIGURE_ARGS += --disable-asm
+  endif
 endif
 
 CONFIGURE_ARGS += \
-		--enable-shared \
-		--enable-pic \
-		--enable-strip \
 		--disable-cli \
+		--enable-shared \
+		--disable-opencl \
+		--enable-pic \
 		--disable-avs \
 		--disable-ffms \
+		--disable-gpac \
 		--disable-lsmash
 
 define Package/libx264